\begin{table}%t6
\caption{\label{ks-tests-fet}Two-sample  Kolmogorov-Smirnov test probabilities for early-type fraction versus cluster velocity dispersion.}
\par
%\centering
\small
\begin{tabular}{lrrrr}
\hline\hline \noalign{\smallskip}
& \multicolumn{4}{c}{Cluster sample 2}\\
 & SDSS & SDSS & EDisCS  &EDisCS  \\
Cluster sample 1 & (All) & ($\sigma \geq$ 600) & ($\sigma <$ 600) & ($\sigma \geq$ 600) \\
\hline
SDSS ($\sigma <$ 600) &  \ldots & 0.628 & 0.190 & \ldots\\
SDSS ($\sigma \geq$ 600) & \ldots & \ldots & \ldots & 0.472\\
EDisCS  ($\sigma <$ 600) &  \ldots & \ldots & \ldots & 0.250\\
EDisCS (All) & 0.506 & \ldots & \ldots & \ldots \\
\hline
\end{tabular}
\end{table}